"Don't run for president," the 71-year-old Trump responded with a smile, drawing laughs from the crowd.

He explained that he used to get "great publicity" until he ran for president, adding he's proud that he has been able to "expose ... the fake news" media in recent years.

"We have shown something that a lot of people didn't really understand. Their approval ratings are down the tubes. People have found out how dishonest it is," said Trump.

Kirk pointed out to Trump that many college students are being "ridiculed and silenced" for supporting him. The president claimed he has significantly more supporters across the country than polls show.

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